陣列

1108.IP 地址無效化
題目連結:https://leetcode.cn/problems/defanging-an-ip-address/description/
題解程式碼:

class Solution {
public:
    string defangIPaddr(string address) {
        string ans;
        for(auto&c:address)
        {
            if(c == '.') ans+="[.]";
            else ans+=c;
        }
        return ans;
    }
};